Finding the Fourth Proportional to 115,438.62, 173,212.76 and 79,954.54
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Solution
The fourth proportional to 115,438.62, 173,212.76 and 79,954.54 is: 119,969.79
Step by Step Solution
- Step 1: Write the proportion equation
115,438.62 : 173,212.76 = 79,954.54 : x - Step 2: Convert to fraction form
115,438.62/173,212.76 = 79,954.54/x - Step 3: Cross multiply
115,438.62x = 173,212.76 × 79,954.54 - Step 4: Simplify right side
115,438.62x = 13,849,146,547.93 - Step 5: Solve for x
x = 13,849,146,547.93/115,438.62 - Step 6: Final answer
x = 119,969.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.